#electro-acoustic_transducer  a transducer that converts electrical to acoustic energy or vice versa
  supertype:  transducer  an electrical device that converts one form of energy into another
  subtype:  cartridge.electro-acoustic_transducer  earphone  loudspeaker_system  microphone
  part:  diaphragm  electro-acoustic transducer that vibrates to receive or produce sound waves

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